Minimize Resolution and Swath

Spatial and Spectral Resolutions

The surface area measured on the ground and represented by an individual pixel, is termed as the spatial resolution. For SENTINEL-2, there are three possible spatial resolutions (see Table 1).

 

Spectral resolution is defined as a measure of ability to resolve features in the electromagnetic spectrum. SENTINEL-2 spectral resolutions (Bandwidth) are provided in Table 1.

Table 1: Wavelengths and Bandwidths of the 3 Spatial Resolutions of the MSI instruments

Spatial Resolution
(m)
Band Number S2A S2B
Central Wavelength
(nm)
Bandwidth
(nm)
Central Wavelength
(nm)
Bandwidth
(nm)
10 2 496.6 98 492.1 98
3 560.0 45 559 46
4 664.5 38 665 39
8 835.1 145 833 133
20 5 703.9 19 703.8 20
6 740.2 18 739.1 18
7 782.5 28 779.7 28
8a 864.8 33 864 32
11 1613.7 143 1610.4 141
12 2202.4 242 2185.7 238
60 1 443.9 27 442.3 45
9 945.0 26 943.2 27
10 1373.5 75 1376.9 76

Radiometric Resolution

Radiometric resolution is a measure of the ability of an imaging system to record different levels of brightness or tone. The radiometric resolution of SENTINEL-2 is 12-bit. This gives a potential range of brightness levels from 0 - 4 095.

Note:
More information on Spatial and Radiometric Resolutions used in SENTINEL-2 Mission can be found here.

 

Temporal Resolution

Temporal resolution is the amount of time, expressed in days, that elapses before a satellite revisits a particular point on the Earth's surface. The satellites in the SENTINEL-2 constellation will provide a revisit time of 5 days at the equator in cloud-free conditions.

Swath Width

The swath width of SENTINEL-2 is 290 km. In comparison, the swath width of LANDSAT 5 TM and LANDSAT 7 ETM+ is 185 km, and the swath width of SPOT-5 is 120 km.